General Science Class 9 MCQs MCQs - General Science Practice | PakExamPoint
Practise General Science Class 9 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
General Science Class 9 MCQs MCQs and revision practice
Study General Science Class 9 MCQs through multiple-choice questions in General Science. This subtopic contains 366 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these General Science Class 9 MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
ایک شے جس میں ذرات ایک دوسرے کے قریب ہوتے ہیں اور ہلتے ہیں وہ _______ کو بیان کرتا ہے؟
A. Solid
B. All three
C. Liquid
D. Gas
Check answer and explanation
Answer: Solid
Explanation In a solid, the particles (atoms, molecules, or ions) are closely packed and vibrate in place, holding their position in the crystal lattice. This vibration is due to thermal energy, and the particles oscillate around their fixed positions. Key Points: In a gas , particles are widely spaced and move freely. In a liquid , particles are close together but move past each other.
Explanation The elements in group VIIA of the periodic table are called halogens. This group consists of the following elements : Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I) Astatine (At) Tennessine (Ts)
مندرجہ ذیل میں سے کون سا پانی کے ساتھ کمزور الیکٹرولائٹ محلول بناتا ہے؟
A. None of these
B. H₂SO₄
C. CH₃COOH
D. NaCl
Check answer and explanation
Answer: CH₃COOH
Explanation Acetic acid (CH3COOH) is a weak acid that only partially dissociates in water, forming a weak electrolyte solution. It does not fully dissociate into ions like strong acids (like HCl) or strong bases (like KOH).
زندگی کے زندہ عمل کی وضاحت کے لیے طبیعیات کے قوانین اور تکنیکوں کو کیا کہتے ہیں؟
A. Biophysics
B. Biostatistics
C. Biometry
D. Bio-economics
Check answer and explanation
Answer: Biophysics
Explanation Biophysics is an interdisciplinary field that applies the laws and techniques of physics to study the structure, function, and behavior of living systems, from molecules to entire organisms. It seeks to understand the physical principles underlying biological processes, such as energy transfer, transport, and signaling.
Explanation The work done on an object is calculated as the product of the force applied and the distance over which the force is applied: Work = Force x Distance = 6 N x 2 m = 12 J So, the work done is 12 Joule.
B. All living organisms are made up of one or more cells
C. Cell is the fundamental unit of life
D. Cell does not contain the hereditary material
Check answer and explanation
Answer: Cell does not contain the hereditary material
Explanation The correct answer is : Cell does not contain the hereditary material. The cell theory postulates: All living organisms are made up of one or more cells. The cell is the fundamental unit of life. New cells are derived from pre-existing cells (biogenesis).
Explanation Bromine (Br2) is the only halogen that exists in a liquid state at room temperature. It is a reddish-brown liquid with a melting point of -7.2°C or 19°F.
Explanation Vapor pressure is the pressure exerted by the vapor of a liquid in equilibrium with its solid or liquid phase. As temperature increases, the molecules of a liquid gain kinetic energy and move more rapidly. Increasing the number of molecules that escape into the vapor phase, thereby increasing the vapor pressure.
Explanation To find the pressure, you need to divide the force (20 N) by the area (5 cm^2). Since 1 cm^2 = 0.0001 m^2, the area in square meters is: 5 cm^2 x (0.0001 m^2/cm^2) = 0.0005 m^2 Now, you can calculate the pressure: Pressure = Force / Area = 20 N / 0.0005 m^2 = 40,000 N/m^2 Since 1 N/m^2 = 1 Pascal (Pa), you can convert the pressure to N/cm^2: 40,000 N/m^2 x (1 m^2 / 100 cm^2) = 4 N/cm^2
Explanation A ratio is a comparison of two values , often expressed as a fraction or a decimal. It shows the relative size or quantity of one value in relation to another. For example : A ratio of 3:4 (or 3/4) compares two values, 3 and 4.
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